31421374 has 8 divisors (see below), whose sum is σ = 47257560. Its totient is φ = 15668856.

The previous prime is 31421329. The next prime is 31421387. The reversal of 31421374 is 47312413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19969 + ... + 21484.

It is an arithmetic number, because the mean of its divisors is an integer number (5907195).

Almost surely, 2^31421374 is an apocalyptic number.

31421374 is a deficient number, since it is larger than the sum of its proper divisors (15836186).

31421374 is a wasteful number, since it uses less digits than its factorization.

31421374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41834.

The product of its digits is 2016, while the sum is 25.

The square root of 31421374 is about 5605.4771429380. The cubic root of 31421374 is about 315.5549937080.

Adding to 31421374 its reverse (47312413), we get a palindrome (78733787).

The spelling of 31421374 in words is "thirty-one million, four hundred twenty-one thousand, three hundred seventy-four".